COMEDK 2022 | Wave Optics Question 6 | Physics

In Young's double slit experiment, the fringe width is found to be 0.4 mm. If the whole apparatus is immersed in a liquid of refractive index $$\frac{4}{3}$$ without changing geometrical arrangement, the new fringe width will be

0.45 mm

0.4 mm

0.53 mm

0.30 mm

COMEDK 2021

MCQ (Single Correct Answer)

-0

An unpolarised beam of intensity I$$_0$$ is incident on a pair of nicols making an angle of 60$$^\circ$$ with each other. The intensity of light emerging from the pair is

$$I_0$$

$$\frac{I_0}{4}$$

$$\frac{I_0}{2}$$

$$\frac{I_0}{8}$$

COMEDK 2021

MCQ (Single Correct Answer)

-0

In Young's double slit experiment with sodium vapour lamp of wavelength 589 nm and slit 0.589 mm apart, the half angular width of the central maxima is

$${\sin ^{ - 1}}(0.01)$$

$${\sin ^{ - 1}}(0.0001)$$

$${\sin ^{ - 1}}(0.001)$$

$${\sin ^{ - 1}}(0.1)$$

COMEDK 2020

MCQ (Single Correct Answer)

-0

Two identical light waves, propagating in the same direction, have a phase difference $$\delta$$. After they superpose the intensity of the resulting wave will be proportional to

$$\cos\delta$$

$$\cos(\delta/2)$$

$$\cos^2(\delta/2)$$

$$\cos^2\delta$$

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